EcoHyT Temperature & Humidity Monitor
An IoT-based environmental monitoring system designed to measure temperature and humidity in critical environments such as medical refrigerators and food storage facilities. The system enables remote monitoring of sensitive conditions, reducing the need for physical presence and minimizing the risk of temperature-related losses.
Project Overview
Understanding the Project
The Goal
Develop a reliable sensor-to-cloud integration capable of continuously measuring temperature and humidity and synchronizing data with the client’s web platform to enable real-time remote monitoring and alerting.
The Challenge
Ensuring accurate and stable environmental measurements while maintaining reliable communication with the client’s API. The system needed to securely transmit sensor data for remote visualization and trigger alerts when readings moved outside predefined safety ranges.
My Role
IoT & API Integration Developer responsible for sensor data acquisition, hardware-to-cloud communication, and API integration with the client’s existing web application. The web application and alerting interface were developed by a separate team.
Role
Firmware & Backend Integration
Timeline
2018
Platform
IoT · Firmware + API
Team
Cross-functional (Hardware + Software)
Screenshots
Visual Showcase
Monitoring dashboard displaying historical temperature and humidity readings
Hardware prototype used for testing
What I Built
- Implemented firmware logic to measure temperature and humidity from the embedded sensors.
- Displayed real-time readings on the device LCD for local monitoring and quick validation.
- Implemented WiFi connectivity (ESP8266) to send measurements to a backend REST API.
- Aligned payload structure with the client's backend requirements for seamless ingestion.
- Implemented the necessary API endpoints inside the client's existing web application.
- Stored measurements in MySQL to enable historical tracking and visualization in the client dashboard.
- Ensured stable, repeatable data delivery suitable for continuous monitoring scenarios.
Tech Stack
Firmware
Backend
Database
Architecture Design Decisions
These decisions were intentional to ensure the site feels professional, calm, and easy to navigate:
- Local LCD output to provide immediate validation and troubleshooting during field testing
- Lightweight, consistent API payloads to integrate smoothly with an existing web platform
- Time-series storage in MySQL to support charts and historical analysis in the client's dashboard
- Separation of concerns: firmware focused on measurement + delivery; dashboard focused on visualization
Results & Learnings
The system enabled remote monitoring of critical temperature and humidity levels, allowing users to supervise medical and food storage environments without being physically present. By integrating with the client’s web platform and supporting automated alerting mechanisms, it reduced operational risk and improved response time to environmental deviations.